| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1024.03 | USD | 20250821 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 631.25 | USD | 20250821 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 631.25 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1036.65 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.28 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.28 | USD | 20250820 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 392.24 | USD | 20250820 |
| Shandong Qiancheng New Materials Co., Ltd. | 90% | MT | 392.24 | USD | 20250820 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1036.65 | USD | 20250820 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 462.29 | USD | 20250820 |